def probe(dbConnection, tolerant, maxProbeTries):
probeTryCount = 0
now = datetime.time(datetime.now())
#Do-While-Schleife für die Validierung
try:
while True:
humidity1, temperature1 = read_retry(sensor=AM2302, pin=2, retries=5) # Try to grab a sensor reading. Use the read_retry method which will retry up
humidity2, temperature2 = read_retry(sensor=AM2302, pin=2, retries=5) # to 15 times to get a sensor reading (waiting 2 seconds between each retry).
probeTryCount += 1
if None in [humidity1, temperature1, humidity2, temperature2] or probeTryCount >= maxProbeTries or humidity1 < 0 or humidity1 > 100 or temperature1 < 0 or temperature1 > 100:
raise ResourceWarning("%s Messung(en) erfolglos. Bitte stellen Sie sicher, dass der Sensor erreichbar ist." % probeTryCount)
if abs(temperature1 - temperature2) < 1 and abs(humidity1 - humidity2) < 2:
break
except ResourceWarning as w: # Falls Messung als gescheitert betrachtet wird, ist eine weitere Berechnung etc. nicht möglich
print(w)
return 11 # Rückgabewert 11 bedeutet eine Forderung nach Programmabbruch
else:
humidity = (humidity1+humidity2)/2
temperature = (temperature1+temperature2)/2
#Taupunktberechnung, Formel anhand von TODO: Quelle angeben! aufgebaut und per CAS gekürzt, sodass die Berechnung in einem Schritt erfolgt.
dewpt = (-3928.5/(log(humidity*exp(-3928.5/(temperature+231.667)))-4.60517))-231.667
print("%s %0.2f %0.2f %0.2f" % (now, temperature, humidity, dewpt))
with dbConnection:
cur = dbConnection.cursor()
cur.execute("insert into Probes values ( strftime('%s','now'), ?, ?, ?)", (temperature, humidity, dewpt))
def tick(self, tictime=0):
self.hum_1, self.temp_1 = read_retry(AM2302, 14)
self.hum_2, self.temp_2 = read_retry(AM2302, 15)
self.rolling_temp = self.rolling_temp[-4:]
self.rolling_temp.append((self.temp_1 + self.temp_2) / 2.0)
self.tictime = time.time()
def main():
Timer(10.0, swapProtocols).start()
while True:
humidity, temperature = read_retry(SENSOR, PIN)
if humidity is not None and temperature is not None:
result = '{}\tSensorID=17205700, Temperature={}, Humidity={}'.format(datetime.now(), temperature, round(humidity))
print(result)
info(result)
print('sending')
try:
#sock.send(result)
#publish.single(MQTT_PATH, result, hostname=MQTT_SERVER)
with SWAP_MUTEX:
sendMsg(result)
except Exception as e:
print('failed connection')
print(e)
info(e)
sleep(5)
continue
print('sent')
sleep(5)
else:
result = 'Failed to get reading. Try again!'
info(result)
def get_humidity_am2302():
humidity, temperature = read_retry(dht_sensor, dht_pin)
json_string = json.dumps(float('%.3f' % (humidity)))
if (json_string == "null"):
return []
else:
return json_string
def read_sensor(sensor_pin):
# Read sensor data
humidity, temperature = read_retry(DHT22, sensor_pin)
if humidity is None and temperature is None:
trace("Failed to get reading on sensor: " + str(sensor_pin), ERROR)
return (temperature, humidity)
def read_sensor():
'''
Returns a tuple of 2 floats:
humidity in percent e.g. 54.2 stands for 54.2% relative humidity
temperature in degrees Celsius. e.g. 32.3 stands for 32.3 degrees Celsius
'''
hum, temp = read_retry(DHT22, raspberrypi_data_pin)
return hum, temp
def update(self):
if self._sensor:
self._humidity, temp = read_retry(self._sensor, self.pin)
if self.units == 'F':
temp = temp * 9 / 5. + 32
self._temperature = temp
self.debug('update temp={}, hum={}'.format(temp, self._humidity))
else:
self.critical('no sensor')
def get_temperature_humidity(PIN=SETTING_TEMPERATURE_HUMIDITY_SENSOR['PIN']):
"""Function, return tuple with data:
(humidity (%), temperature (C)).
"""
humidity, temperature = None, None
while True:
humidity, temperature = read_retry(DHT22, PIN)
if humidity is not None and temperature is not None:
return measurement(round(humidity, 2), round(temperature, 2))
def update(self):
if self._sensor:
self._humidity, temp = read_retry(self._sensor, self.pin)
if self.units == 'F':
temp = temp * 9 / 5. + 32
self._temperature = temp
self.debug('update temp={}, hum={}'.format(temp, self._humidity))
else:
self.critical('no sensor')
def read_sensor(self):
logging.debug('Reading {} sensor'.format(self.name))
self.hum, self.temp = read_retry(22, self.sensor_chan)
if self.hum != None and self.temp != None:
logging.debug('{0}: Temp={1:0.1f}* Humidity={2:0.1f}%'.format(
self.name, self.temp, self.hum))
return True
else:
logging.error('Failed to get temperature/humidity '
'for cage {}'.format(self.name))
return False
def requestData():
# Returns a dictionary with all the data corresponding to a db entry (an Instant)
h,t = read_retry(sensor, pin)
current_time = time.strftime("%d.%m.%Y.%H.%M").split('.')
values = {}
values['temp'], values['hum'] = get_temp_and_hum()
values['day'] = current_time[0]
values['month'] = current_time[1]
values['year'] = current_time[2]
values['hour'] = current_time[3]
values['minute'] = current_time[4]
return values
def poll_sensor(self):
"""Poll the sensor to get the temp and humidity"""
# Try to grab a sensor reading. Use the read_retry method which will retry up to 15 times
# to get a sensor reading (waiting 2 seconds between each retry).
humidity, temperature = read_retry(self.sensor, self.pin)
# Note that sometimes you won't get a reading and the results will be null (because Linux
# can't guarantee the timing of calls to read the sensor). If this happens try again!
if humidity is not None and temperature is not None:
temphumid = (humidity, temperature)
return temphumid
else:
raise EnvironmentError(
'Failed to get a reading from DHT22') # pragma: no cover
def _detect(self, celsius, fahrenheit, poll_time):
"""
Thread for detecting temperature.
Uses Adafruit_DHT module to detect temperature of environment.
Properties
----------
Inherits **kwargs from detect method.
"""
while True:
self.humidity, self.temperature = read_retry(
self.sensor, self.pin)
if celsius:
pass
else:
self.temperature = self.temperature * 9 / 5.0 + 32
sleep(poll_time)
def run(self):
self.is_running = True
while self.is_running:
sleep(EnvironmentalSensor.MAX_READ_INTERVAL)
relative_humidity, temperature = read_retry(DHT22, self.sensor_pin)
if relative_humidity is not None or temperature is not None:
entry = LogEntry(
self.hardware_device_id,
relative_humidity,
temperature)
EnvironmentalSensor.logger.info(entry)
self.latest_log_entry.set_value(entry)
if self.entry_queue is not None:
EnvironmentalSensor.logger.debug('Enqueued Log Entry')
self.entry_queue.put(entry)
else:
EnvironmentalSensor.logger.warning('Failed to read from sensor')
SENSOR_COUNT = len(SENSOR_PINS)
GPIO.setwarnings(False)
GPIO.setmode(GPIO.BCM)
GPIO.setup(SWITCH_PIN, GPIO.OUT)
switch_on = False
sleep_time = SAMPLE_INTERVAL
db = MongoClient().local
while True:
data = {"dt": datetime.now().strftime('%Y-%m-%d %H:%M:%S')}
avg_humid = 0
for pin in SENSOR_PINS:
humid, temp = read_retry(DHT22, pin)
avg_humid += humid
data[str(pin)] = {"h": round(humid, 3), "t": round(temp, 3)}
avg_humid /= SENSOR_COUNT
if switch_on:
if avg_humid > HUMID_UPPER:
GPIO.output(SWITCH_PIN, GPIO.LOW)
sleep_time = SAMPLE_INTERVAL
data['on'] = 0
switch_on = False
else:
if avg_humid < HUMID_LOWER:
GPIO.output(SWITCH_PIN, GPIO.HIGH)
sleep_time = MEASURE_INTERVAL
def getDHT11Data():
"""return humidity and temperature from DHT11"""
humidity, temperature = read_retry(11, 4)
return humidity, temperature
def get_am2302_string():
humidity, temperature = read_retry(dht_sensor, dht_pin)
data = "T: %.1fC H: %.0f%%" % (temperature, humidity)
return data
def update(self):
self._humidity, temp = read_retry(self._sensor, self.pin)
if self.units == 'F':
temp = temp * 9 / 5. + 32
self._temperature = temp
if __name__ == '__main__':
blanks = " " * 16
lcd.clear()
lcd.cursor_pos = (0, 0)
lcd.write_string('CO2: ')
lcd.cursor_pos = (1, 0)
lcd.write_string('T: ')
beginning_time = time.time()
with open('record.csv', 'w') as f:
fw = csv.writer(f)
fw.writerow(('time', 'CO2-PPM', 'Temp-C', 'Humidity-PCT'))
while True:
thetime = time.time()
co2 = read_CO2()['CO2']
humidity, temperature = read_retry(11, 17)
lcd.cursor_pos = (0, 5)
lcd.write_string((str(co2) + ' PPM' + blanks)[:16 - 5])
lcd.cursor_pos = (1, 3)
t_string = '%d' % temperature + 'C'
h_string = '%d' % humidity + '%'
lcd.write_string((t_string + ' H:' + h_string + blanks)[:16 - 6])
print('CO2:', co2, 'T:', temperature, 'H:', humidity)
fw.writerow((thetime, co2, temperature, humidity))
time.sleep(1)
def get_temp_and_hum():
h,t = read_retry(sensor, pin)
return round(t,1) ,round(h,1)
'value': heat2,
timestamp: timestamp
}, {
'variable': uptime.id,
'value': 1,
timestamp: timestamp
}])
except:
print("Error saving data to ubidots")
traceback.print_exc()
print("Beginning main event loop")
while (True):
try:
hum_1, temp_1 = read_retry(AM2302, 14)
hum_2, temp_2 = read_retry(AM2302, 15)
last_avg_temp = (temp_1 + temp_2) / 2
if HEATER_IS_ON and (last_avg_temp > 30.2):
toggle_heater_state()
if not HEATER_IS_ON and (last_avg_temp < 29.8):
toggle_heater_state()
hs = 1 if HEATER_IS_ON else 0
write_sensor_data(temp_1, temp_2, hum_1, hum_2, hs, hs)
time.sleep(5)
except:
print("Program exiting! Turning heater off...")
# create db client
db = InfluxDBClient(host=end, database=dbname)
try:
# if there is no db running on endpoint this will error
db.get_list_database()
except KeyboardInterrupt:
exit
except Exception as e:
db = None
sleep(60)
log("database found sending data")
while db is not None:
h, t = None, None
if s is not None:
h, t = read_retry(s, p)
# if the h, t objects exists
if h is not None and t is not None:
# create a message containing telemetry
msg1 = [{
'measurement': 'atmos',
'tags': {
"host": gethostname()
},
'fields': {
'cpu_usage': float("%.2f" % cpu_percent()),
'mem_usage': float("%.2f" % virtual_memory().percent),
'cpu_temp': temp(),
'temp': float("%.2f" % t),
'humi': float("%.2f" % h)
def get_humidity_temperature(self):
from Adafruit_DHT import read_retry, DHT11
hum, temp = read_retry(DHT11, self.sensor_pin)
hum = int(hum)
temp = int(temp)
return hum, temp
def main():
while True:
humidity, temp = read_retry(DHT11, 18)
if humidity is not None:
print("Current Humidity={}% and temp={}".format(humidity, temp))
sleep(2)
def raw_dht():
sensor = DHT11
pin = 21
return read_retry(sensor, pin)
def getData(self):
data = [self.getName(), 0, 0]
data[1], data[2] = read_retry(DHT11, self.__pin, 7, 0.01)
return data
def raw_dht():
return read_retry(sensor, pin)
def get_temp_humidity():
humidity, temp = read_retry(DHT22, 4)
temp = (temp * 9/5) + 32
return temp, humidity
def get_hum_and_temp():
h, t = read_retry(sensor, pin)
return round(h, 1), round(t, 1)
def update(self):
self._humidity, temp = read_retry(self._sensor, self.pin)
if self.units == 'F':
temp = temp * 9 / 5. + 32
self._temperature = temp
